Overhead Line Tube (Insulcover)
Overhead Line Tube is a medium voltage line cover that insulates overhead conductors, helping prevent electrical outages caused by trees or wildlife coming into contact with distribution lines.
Choose a size
Selection Charts
| Gala Code | Internal Diameter mm(Min.) | Thickness mm(±10%) | Packaging(Mtr./Roll) |
|---|---|---|---|
| GOT-M 18 | 18.0 mm | 1.0 | 50 |
| GOT-M 25 | 25.0 mm | 1.0 | 50 |
| GOT-M 35 | 35.0 mm | 1.0 | 50 |
Source: GALA Overhead Line Tube catalogue sheet, Issue 2, January 2024.
GOT-H — 2.5 mm wall
| Gala Code | Internal Diameter mm(Min.) | Thickness mm(±10%) | Packaging(Mtr./Roll) |
|---|---|---|---|
| GOT-H 18 | 18.0 mm | 2.5 | 50 |
| GOT-H 25 | 25.0 mm | 2.5 | 50 |
| GOT-H 35 | 35.0 mm | 2.5 | 50 |
Source: GALA Overhead Line Tube catalogue sheet, Issue 2, January 2024.
Material properties
Technical Specification
| Property | Value | Test Method |
|---|---|---|
| Tensile Strength | 10 N/mm² (Mpa) (min.) | ASTM D638 |
| Ultimate Elongation | 350 % (min) | ASTM D638 |
| Density | 1.20 ± 0.2 gm/cm³ | ASTM D792 |
| Hardness | 30 ±5 Shore D | ASTM D2240 |
| Water absorption | 0.5 % (max.) | ASTM D570 |
| Low Temperature Flexibility (-40 °C for 4 hrs.) | No Cracking | ASTM D2671 |
| Continuous Temperature Limit | -45 to +105 °C | -- |
| Dielectric Strength | 20 kV/mm (min) | ASTM D149 |
| Volume Resistivity | 1 x 10¹⁴ Ohm.cm (min) | ASTM D257 |
| Dielectric constant | 5 (max.) | ASTM D150 |
Source: GALA Overhead Line Tube catalogue sheet, Issue 2, January 2024.
Overhead Line Tube is a medium-voltage line cover in non-tracking polyolefin, insulating overhead conductors to help prevent electrical outages caused by trees or wildlife contacting distribution lines.
Features & Benefits
- High dielectric strength
- UV stabilised and weather resistant
- Tracking and erosion resistant
- Resists chemical corrosion from strong acid, alkali and salt
- Halogen free
- Flame retardant
Applications
- Overhead conductor insulation
- Outage prevention from tree and wildlife contact
FAQs
Frequently Asked Questions
What is the Overhead Line Tube used for?
It is used for:
- Overhead conductor insulation
- Outage prevention from tree and wildlife contact
How do I choose the right size?
Use the selection chart on this page: it lists every code with its dimensions. If you are not sure which fits, send the dimensions you are working to with the form below.
Where can I download the datasheet?
From the "Download datasheet" button at the top of this page, or here:
Can I get a quote, a sample or a size that is not listed?
Send your cable details, quantity and application with the "Request a Quote or Sample" form at the foot of this page. For a size or variant that is not in the chart, describe what you need there, or use Technical support at the top of the page, and the technical team will confirm what can be supplied.
47+
Years manufacturing
100+
Countries served
140
Products in range
ISO 9001:2015
Certified & tested